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Heterogeneity in the smoking behavior of African American women

Gary King1, Anthony Polednak, Pebbles Fagan

  • 1The Pennsylvania State University, 315 E. Health and Human Development, University Park, PA 16802, USA. gxk14@psu.edu

American Journal of Health Behavior
|May 23, 2006
PubMed

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Longitudinal Research

Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
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